Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	$ 544,000	$ 1,376,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,602,000	7,826,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	4,541,000	5,977,000
Appraisal Discount Method [Member] | Impaired Loans [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) [Line Items]
Assets, Fair Value Disclosure	2,100,000	6,400,000
Mortgage Servicing Rights [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	0	0
Fair Value, Inputs, Level 3 [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) [Line Items]
Assets, Fair Value Disclosure	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	$ 0
Fair Value, Inputs, Level 3 [Member] | Appraisal Discount Method [Member] | Impaired Loans [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) [Line Items]
Assets, Fair Value Disclosure	$ 2,058,000